词汇	land launching
释义	land launching 地面发射
随便看	sliding friction coefficient between teeth sliding friction force sliding friction gravity conveyer sliding-friction gravity conveyer sliding friction power losses sliding friction time sliding friction torque sliding friction wear sliding frog sliding gage SLIDING games sliding gate sliding gate feed sliding gate measuring valve sliding gate pump sliding gatesliding door sliding gate system sliding gauge sliding gauge ring sliding gear sliding gear drive sliding gear emchanism sliding gear mechanism sliding gear pivoting eccentric sliding gear pivoting eccentrical